Isothermal crystallization kinetics of polypropylene/POSS composites |
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| Authors: | Zhiyong Zhou Limei Cui Yong Zhang Yinxi Zhang Nianwei Yin |
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| Institution: | State Key Laboratory of Metal Matrix Composites, School of Chemistry and Chemical Technology, Shanghai Jiao Tong University, Shanghai 200240, China |
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| Abstract: | Polypropylene (PP)/octavinyl polyhedral oligomeric silsesquioxane (POSS) composites were prepared by two different processing methods: reactive blending and physical blending, and the crystallization behavior of PP and PP/POSS composites was studied by means of differential scanning calorimetry and polarized optical microscope. The results showed that the crystallization of PP in PP/POSS composites was strongly influenced by the different processing methods. POSS particles can act as effective nucleating agent, accelerating the crystallization of PP. The crystallization rate increased more dramatically for the reactive blending composite due to the stronger nucleating effect of PP grafted POSS. © 2008 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 46: 1762–1772, 2008 |
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| Keywords: | composites crystallization crystallization kinetics kinetics (polym ) polyhedral oligomeric silsesquioxane (POSS) poly(propylene) |
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